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authorChristoph Lameter <clameter@sgi.com>2006-06-23 13:03:53 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 18:42:53 +0400
commit95a402c3847cc16f4ba03013cd01404fa0f14c2e (patch)
tree0fd9b3379f70cc99b2325bccaa150089abf6c8b3 /include/linux/migrate.h
parentaaa994b300a172afafab47938804836b923e5ef7 (diff)
downloadlinux-95a402c3847cc16f4ba03013cd01404fa0f14c2e.tar.xz
[PATCH] page migration: use allocator function for migrate_pages()
Instead of passing a list of new pages, pass a function to allocate a new page. This allows the correct placement of MPOL_INTERLEAVE pages during page migration. It also further simplifies the callers of migrate pages. migrate_pages() becomes similar to migrate_pages_to() so drop migrate_pages_to(). The batching of new page allocations becomes unnecessary. Signed-off-by: Christoph Lameter <clameter@sgi.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Jes Sorensen <jes@trained-monkey.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/migrate.h')
-rw-r--r--include/linux/migrate.h11
1 files changed, 6 insertions, 5 deletions
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 83af25949fa9..5b95d6568dc4 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -3,14 +3,15 @@
#include <linux/mm.h>
+typedef struct page *new_page_t(struct page *, unsigned long private);
+
#ifdef CONFIG_MIGRATION
extern int isolate_lru_page(struct page *p, struct list_head *pagelist);
extern int putback_lru_pages(struct list_head *l);
extern int migrate_page(struct address_space *,
struct page *, struct page *);
-extern int migrate_pages(struct list_head *l, struct list_head *t);
-extern int migrate_pages_to(struct list_head *pagelist,
- struct vm_area_struct *vma, int dest);
+extern int migrate_pages(struct list_head *l, new_page_t x, unsigned long);
+
extern int fail_migrate_page(struct address_space *,
struct page *, struct page *);
@@ -21,8 +22,8 @@ extern int migrate_prep(void);
static inline int isolate_lru_page(struct page *p, struct list_head *list)
{ return -ENOSYS; }
static inline int putback_lru_pages(struct list_head *l) { return 0; }
-static inline int migrate_pages(struct list_head *l, struct list_head *t)
- { return -ENOSYS; }
+static inline int migrate_pages(struct list_head *l, new_page_t x,
+ unsigned long private) { return -ENOSYS; }
static inline int migrate_pages_to(struct list_head *pagelist,
struct vm_area_struct *vma, int dest) { return 0; }